CN103499871A - Superachromatic optical system used for measuring divergence angle of laser beams - Google Patents
Superachromatic optical system used for measuring divergence angle of laser beams Download PDFInfo
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- CN103499871A CN103499871A CN201310389943.3A CN201310389943A CN103499871A CN 103499871 A CN103499871 A CN 103499871A CN 201310389943 A CN201310389943 A CN 201310389943A CN 103499871 A CN103499871 A CN 103499871A
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Abstract
The invention provides a superachromatic optical system used for measuring the divergence angle of a laser beam. The optical system comprises a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), a fifth lens (5) and a sixth lens (6), wherein the first lens (1), the second lens (2), the third lens (3), the fourth lens (4), the fifth lens (5) and the sixth lens (6) are sequentially arranged on the same horizontal optical axis. Superachromatic performance of the optical system is achieved within the working wave band ranging from 350nm to 1600nm; the aperture is 150mm, the focus is 900mm, and the total length is 660mm. The optical system is telephoto, small in size and low in weight and processing cost, and an optical transfer function is close to a diffraction limit. The system is used for measuring the divergence angle of the laser beam, can simplify measurement steps and is high in measurement precision.
Description
Technical field
The present invention relates to a kind of optical system of the superchromaticity for the laser-beam divergence angular measurement, belong to optical technical field.
background technology
The laser-beam divergence angle is an important parameter estimating laser beam quality, the divergence characterization of laser beam when it has not only reflected long-distance transmissions, quality that can also the accurate evaluation laser instrument.The existing optical system for the laser-beam divergence angular measurement mainly adopts simple condenser lens, and its light to different wave length has different focal lengths, and each measurement all needs calibrated focal length, and measuring process is loaded down with trivial details, is easy to introduce measuring error; Simultaneously, larger with the optical system focal length owing to measuring the angle of divergence, cause the system overall length long, volume is large.
In order to overcome the above problems, need to accomplish superchromaticity for the optical system of broadband application, make optical system basic identical to the light focal length of different wave length in service band, only need primary calibration to get final product, simplified measuring process, improved measuring accuracy; Need to accomplish to take the photograph type structure far away for long-focal distance optical system, the system overall length of making is less than focal length, reduces volume simultaneously.
summary of the invention
The deficiency existed for prior art, the invention provides a kind of optical system of the superchromaticity for the laser-beam divergence angular measurement, at 350-1600nm service band achromatism, uses it for the measurement at laser-beam divergence angle, and measuring accuracy is high; The optical system bore of 150mm can meet the beam divergence angular measurement of large spot size; Take the photograph type optical system structure far away the total length of whole system is shortened, manufacturing cost reduces.
As shown in Figure 1, a kind of optical system of the superchromaticity for the laser-beam divergence angular measurement provided by the invention, comprise the first eyeglass 1, the second eyeglass 2, the 3rd eyeglass 3, the 4th eyeglass 4, the 5th eyeglass 5 and the 6th eyeglass 6; The first eyeglass 1, the second eyeglass 2, the 3rd eyeglass 3, the 4th eyeglass 4, the 5th eyeglass 5 and the 6th eyeglass 6 are successively set on the same level optical axis;
Described the first eyeglass 1 is positive lens, preferred FK51 glass manufacture, forward and backward surface curvature radius be respectively 264.2mm and-302mm, center thickness is 40mm, bore is φ 150mm;
Described the second eyeglass 2 is negative lens, preferred FN11 glass manufacture, forward and backward be respectively-263mm of surface curvature radius and 162.93mm, center thickness is 20mm, bore is φ 134mm, and the airspace between its front surface summit and the first eyeglass 1 summit, rear surface is 23.4mm;
Described the 3rd eyeglass 3 is positive lens, preferred SF6 glass manufacture, forward and backward surface curvature radius is respectively 177.01mm and ∞, and center thickness is 32mm, bore is φ 130mm, and the airspace between its front surface summit and the second eyeglass 2 summits, rear surface is 5.2mm;
Described the 4th eyeglass 4 is negative lens, preferred SF59 glass manufacture, forward and backward be respectively-990.8mm of surface curvature radius and 112.2mm, center thickness is 16mm, bore is φ 50mm, and the airspace between its front surface summit and the 3rd eyeglass 3 summits, rear surface is 260mm;
Described the 5th eyeglass 5 is positive lens, preferred SK51 glass manufacture, forward and backward surface curvature radius be respectively 69.5mm and-93.33mm, center thickness is 22mm, bore is φ 50mm, and the airspace between its front surface summit and the 4th eyeglass 4 summits, rear surface is 5.5mm;
Described the 6th eyeglass 6 is negative lens, preferred SF56A glass manufacture, forward and backward be respectively-70.47mm of surface curvature radius and-955mm, center thickness is 14mm, bore is φ 42mm, airspace between its front surface summit and the 5th eyeglass 5 summits, rear surface is 7.5mm, and the summit, rear surface is 214.34mm to airspace between the focus of described a kind of optical system of the superchromaticity for the laser-beam divergence angular measurement;
A kind of optical system of the superchromaticity for the laser-beam divergence angular measurement as above, service band is 350nm-1600nm, and bore is φ 150mm, and focal length is 900mm, and total length is 660mm.
Beneficial effect: a kind of optical system of the superchromaticity for the laser-beam divergence angular measurement provided by the invention, total length is only 3/4 of focal length, has realized taking the photograph the design of type optical system far away, little, lightweight with ordinary optical system phase specific volume, processing cost is low; Six kinds of glass used are the ordinary optical material, compare with the special optical material that price is lower, physical and chemical performance is stable, and six-element lens is simple lens, avoids adopting the gummed part, is applicable to the measurement of high power laser beam divergence angle.Data and tracing analysis through geometrical aberration show, for centre wavelength 532nm, to obtain focal length be 900mm in design, and the spherical aberration at unified place is 0.0676mm; Light for 355nm, 532nm, 660nm, 808nm, 940nm, 1064nm, 1319nm and 1570nm intersects at a point substantially at 0.707 place, aperture, has realized the superchromaticity to the 350nm-1600nm wave band; Through the optical transfer function tracing analysis, show, the mtf value at each frequency place all approaches diffraction limit.
The accompanying drawing explanation
Fig. 1 is a kind of optical system light path of the superchromaticity for laser-beam divergence angular measurement figure.
Fig. 2 is a kind of optical system of the superchromaticity for laser-beam divergence angular measurement longitudinal aberration curve map.
Fig. 3 is a kind of optical system of the superchromaticity for laser-beam divergence angular measurement optical transfer function curve map.
In figure: 1-the first eyeglass, 2-the second eyeglass, 3-the 3rd eyeglass, 4-the 4th eyeglass, 5-the 5th eyeglass, 6-the 6th eyeglass.
Claims (2)
1. the optical system of the superchromaticity for the laser-beam divergence angular measurement, it is characterized in that, comprise the first eyeglass (1), the second eyeglass (2), the 3rd eyeglass (3), the 4th eyeglass (4), the 5th eyeglass (5) and the 6th eyeglass (6), described the first eyeglass (1), the second eyeglass (2), the 3rd eyeglass (3), the 4th eyeglass (4), the 5th eyeglass (5) and the 6th eyeglass (6) are successively set on the same level optical axis;
Described the first eyeglass (1) is for adopting the positive lens of FK51 glass manufacture, its forward and backward surface curvature radius be respectively 264.2mm and-302mm, center thickness is 40mm, bore is φ 150mm;
Described the second eyeglass (2) is for adopting the negative lens of FN11 glass manufacture, its forward and backward be respectively-263mm of surface curvature radius and 162.93mm, center thickness is 20mm, and the airspace between its front surface summit and the first eyeglass (1) summit, rear surface is 23.4mm, and bore is φ 134mm;
Described the 3rd eyeglass (3) is for adopting the positive lens of SF6 glass manufacture, its forward and backward surface curvature radius is respectively 177.01mm and ∞, center thickness is 32mm, and bore is φ 130mm, and the airspace between its front surface summit and the second eyeglass (2) summit, rear surface is 5.2mm;
Described the 4th eyeglass (4) is for adopting the negative lens of SF59 glass manufacture, its forward and backward be respectively-990.8mm of surface curvature radius and 112.2mm, center thickness is 16mm, and bore is φ 50mm, and the airspace between its front surface summit and the 3rd eyeglass (3) summit, rear surface is 260mm;
Described the 5th eyeglass (5) is for adopting the positive lens of SK51 glass manufacture, its forward and backward surface curvature radius is respectively 69.5mm and-93.33, center thickness is 22mm, and bore is φ 50mm, and the airspace between its front surface summit and the 4th eyeglass (4) summit, rear surface is 5.5mm;
Described the 6th eyeglass (6) is for adopting the negative lens of SF56A glass manufacture, its forward and backward be respectively-70.47mm of surface curvature radius and-955, center thickness is 14mm, and bore is φ 42mm, and the airspace between its front surface summit and the 5th eyeglass (5) summit, rear surface is 7.5mm.
2. a kind of optical system of the superchromaticity for the laser-beam divergence angular measurement as claimed in claim 1, it is characterized in that: service band is 350nm-1600nm, and bore is 150mm, and focal length is 900mm, and total length is 660mm takes the photograph type optical system far away.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310389943.3A CN103499871B (en) | 2013-09-02 | 2013-09-02 | A kind of superchromaticity optical system for laser-beam divergence angular measurement |
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| CN201310389943.3A CN103499871B (en) | 2013-09-02 | 2013-09-02 | A kind of superchromaticity optical system for laser-beam divergence angular measurement |
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| CN103499871A true CN103499871A (en) | 2014-01-08 |
| CN103499871B CN103499871B (en) | 2017-07-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865679A (en) * | 2014-02-26 | 2015-08-26 | 信泰光学(深圳)有限公司 | Imaging lens |
| CN105403980A (en) * | 2015-12-15 | 2016-03-16 | 桂林电子科技大学 | Large-view-field CaF2-free superachromatic lens for machine visual detection |
| CN106405803A (en) * | 2016-11-22 | 2017-02-15 | 南京先进激光技术研究院 | Large axial chromatic aberration linear dispersion object lens |
| WO2018200622A1 (en) * | 2017-04-26 | 2018-11-01 | Newport Corporation | Lens system for use with high laser power density scanning system |
| CN111443463A (en) * | 2020-05-18 | 2020-07-24 | 苏州东方克洛托光电技术有限公司 | Ultra-wide spectral band imaging lens |
| CN113484990A (en) * | 2021-07-14 | 2021-10-08 | 天津欧菲光电有限公司 | Optical lens, camera module, electronic equipment and automobile |
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| JP2010039340A (en) * | 2008-08-07 | 2010-02-18 | Canon Inc | Optical system and image pickup apparatus having the same |
| CN202256841U (en) * | 2011-06-22 | 2012-05-30 | 大立光电股份有限公司 | Optical image lens assembly |
| CN202305970U (en) * | 2011-07-06 | 2012-07-04 | 大立光电股份有限公司 | Image pickup optical system |
| US8314999B1 (en) * | 2011-05-16 | 2012-11-20 | Largan Precision Co., Ltd. | Optical image lens assembly |
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- 2013-09-02 CN CN201310389943.3A patent/CN103499871B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010039340A (en) * | 2008-08-07 | 2010-02-18 | Canon Inc | Optical system and image pickup apparatus having the same |
| US8314999B1 (en) * | 2011-05-16 | 2012-11-20 | Largan Precision Co., Ltd. | Optical image lens assembly |
| CN202256841U (en) * | 2011-06-22 | 2012-05-30 | 大立光电股份有限公司 | Optical image lens assembly |
| CN202305970U (en) * | 2011-07-06 | 2012-07-04 | 大立光电股份有限公司 | Image pickup optical system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865679A (en) * | 2014-02-26 | 2015-08-26 | 信泰光学(深圳)有限公司 | Imaging lens |
| CN105403980A (en) * | 2015-12-15 | 2016-03-16 | 桂林电子科技大学 | Large-view-field CaF2-free superachromatic lens for machine visual detection |
| CN106405803A (en) * | 2016-11-22 | 2017-02-15 | 南京先进激光技术研究院 | Large axial chromatic aberration linear dispersion object lens |
| CN106405803B (en) * | 2016-11-22 | 2019-02-01 | 南京先进激光技术研究院 | A kind of linear dispersion object lens of big axial chromatic aberration |
| WO2018200622A1 (en) * | 2017-04-26 | 2018-11-01 | Newport Corporation | Lens system for use with high laser power density scanning system |
| CN111443463A (en) * | 2020-05-18 | 2020-07-24 | 苏州东方克洛托光电技术有限公司 | Ultra-wide spectral band imaging lens |
| CN111443463B (en) * | 2020-05-18 | 2021-10-15 | 苏州东方克洛托光电技术有限公司 | Ultra-wide spectral band imaging lens |
| CN113484990A (en) * | 2021-07-14 | 2021-10-08 | 天津欧菲光电有限公司 | Optical lens, camera module, electronic equipment and automobile |
| CN113484990B (en) * | 2021-07-14 | 2022-07-19 | 天津欧菲光电有限公司 | Optical lens, camera module, electronic equipment and automobile |
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| CN103499871B (en) | 2017-07-11 |
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Inventor after: Wang Fei Inventor after: Yang Jinhua Inventor after: Li Yuyao Inventor after: Tian Ming Inventor after: Fu Xiuhua Inventor after: Che Ying Inventor after: Luo Kuan Inventor after: Jiao Zhengchao Inventor after: Wang Xiaohua Inventor after: Zhang Guoyu Inventor before: Li Yuyao Inventor before: Wang Fei Inventor before: Che Ying Inventor before: Yang Jinhua Inventor before: Luo Kuan Inventor before: Jiao Zhengchao Inventor before: Wang Xiaohua Inventor before: Zhang Guoyu |
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Granted publication date: 20170711 Termination date: 20180902 |